A stereo player has been a staple in households for decades. And while the term is still widely used, there are many synonyms for this device that can be used interchangeably. For instance, a stereo system, music system, hi-fi system, or even a sound system can all be used to describe this piece of equipment. In addition, words like audio receiver, CD player, and digital music player can be used to refer to a stereo player depending on its specific functions. Regardless of the term used, the purpose of a stereo player is always the same: to play music or provide sound for entertainment purposes.